New Sustainable Building Materials Solved Questions - Set 17 - ObjectiveBooks

New Sustainable Building Materials Solved Questions - Set 17

Practice Test: Question Set - 17

1. Which of the following exercises most powerful influence on the mechanical properties of steel?
    (A) Manganese
    (B) Carbon
    (C) Phosphorous
    (D) Silicon

2. Fatigue failure of a material results from __________ stress.
    (A) Tensile
    (B) Compressive
    (C) Fluctuating
    (D) None of these

3. Creep is not exhibited at low temperature by
    (A) Rubber
    (B) Acrylics
    (C) Lead
    (D) Plastics

4. Graphite is corroded by
    (A) Sulphuric acid (10%)
    (B) Sea water
    (C) Hydrochloric acid
    (D) None of these

5. A material is able to retain the deformation permanently by virtue of its
    (A) Elasticity
    (B) Plasticity
    (C) Ductility
    (D) Malleability

6. Titanium metal
    (A) Exists in three allotropic forms
    (B) Cannot be welded
    (C) Is used in oceanographic and space exploration applications
    (D) None of these

7. Glass lined vessels are not used for handling/storing
    (A) Dilute H2SO4
    (B) Dilute HNO3
    (C) Dilute HCl
    (D) Hydrofluoric acid

8. Plasticizers are added to polymers to improve their
    (A) Tensile strength
    (B) Softness & flexibility
    (C) Acid resistance
    (D) Alkali resistance

9. Iron rust is
    (A) Ferrous oxide
    (B) Hydrated ferric oxide
    (C) Powdered iron
    (D) Ferric sulphide

10. Out of the following, copper vessels are the most suitable for the storage of
    (A) Bromine
    (B) Dry chlorine & dry fluorine
    (C) Nitric acid (95% and fuming)
    (D) Phosphoric acid (95%) & sulphuric acid (95% and fuming)

11. Graphite is a good
    (A) Thermal & electrical insulator
    (B) Conductor of heat
    (C) Conductor of electricity
    (D) Both (b) & (c)

12. Shock resisting steels should possess high
    (A) Hardness
    (B) Toughness
    (C) Tensile strength
    (D) Wear resistance

13. __________ alloys have the highest specific strength of all the structural materials out of the following.
    (A) Magnetic steel
    (B) Titanium
    (C) Chromium
    (D) Magnesium

14. Sherardizing process is used for
    (A) Surface coating
    (B) Heat treatment of high speed steel
    (C) Cold working on metals
    (D) None of these

15. Materials having __________ lattice structure are usually most ductile.
    (A) FCC
    (B) BCC
    (C) HCP
    (D) Cubic

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